To download and install Windows 11 25H2, open Settings > Windows Update and check for update. You'll also need to select ...
If you want to know how long it takes to install Windows 10 or Windows 11 from a bootable USB on your system, this post will answer your question. How long does it take to install Windows 11 from USB?
My Google-fu is failing me. I have my OS split onto an SSD, with my data on another drive. I have my Home folder on the SSD, also, but the Documents, Movies, Music, etc. are on the second drive.